85f1.8 vs f1.4

My dream lenses are the 84f1.4D (no G, thank you!) and either the 105 (a bit short for my taste) or the 135DC, I can't afford any of them and as such they have to remain as dreams but I was wondering if the gap between the 84 f1.4 and f1.8 was so big in terms of out of focus rendering, sharpness and tonal range; I have the 50f1.4D and I love it, to be honest 1.4 to 1.8 doesn't seem a big deal, the 85 f1.8 has 9 blades which suggests, technically, a good bokeh, I also have the double ring 80-200 which I love but sometimes you wanna go light and a couple primes would do well...